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{{Short description|Order of flowering plants}}
{{Automatic taxobox
{{Automatic taxobox
|fossil_range= {{Fossilrange|Coniacian|Recent}}
|fossil_range= {{Fossilrange|Coniacian|Recent}}
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|image_caption=[[Dove tree]] in flower, a species in [[Nyssaceae]]
|image_caption=[[Dove tree]] in flower, a species in [[Nyssaceae]]
|taxon=Cornales
|taxon=Cornales
|authority=[[Johann Heinrich Friedrich Link|Link]]<ref name=APGIII2009>{{Cite journal |last=Angiosperm Phylogeny Group |year=2009 |title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III |journal=Botanical Journal of the Linnean Society |volume=161 |issue=2 |pages=105–121 |url=http://www3.interscience.wiley.com/journal/122630309/abstract |archive-url=https://wayback.archive-it.org/all/20170525104318/http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2009.00996.x/abstract |dead-url=yes |archive-date=2017-05-25 |format= PDF |accessdate=2013-07-06 |doi=10.1111/j.1095-8339.2009.00996.x }}</ref>
|authority=[[Johann Heinrich Friedrich Link|Link]]<ref name=APGIII2009>{{Cite journal |last=Angiosperm Phylogeny Group |year=2009 |title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III |journal=Botanical Journal of the Linnean Society |volume=161 |issue=2 |pages=105–121 |doi=10.1111/j.1095-8339.2009.00996.x |doi-access=free |hdl=10654/18083 |hdl-access=free }}</ref>
|subdivision_ranks=Families
|subdivision_ranks=Families
|subdivision=
|subdivision=
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}}
}}


The '''Cornales''' are an order of [[flowering plant]]s, [[basal (phylogenetics)|basal]] among the [[asterids]], containing about 600 species. Plants within the Cornales usually have four-parted flowers, [[drupaceous]] fruits, and inferior [[gynoecia]] topped with disc-shaped [[nectar]]ies.
The '''Cornales''' are an order of [[flowering plant]]s, early diverging among the [[asterids]], containing about 600 species. Plants within the Cornales usually have four-parted flowers, [[Drupe|drupaceous]] fruits, and inferior to half-inferior [[gynoecia]] topped with disc-shaped [[nectar]]ies.


==Taxonomy ==
==Taxonomy ==


In the classification system of [[Rolf Dahlgren|Dahlgren]] the Cornales were in the [[superorder]] Corniflorae (also called Cornanae). Under the [[APG IV system]], the Cornales order includes these families:<ref name=APGIV>{{Cite journal|authors=Angiosperm Phylogeny Group|authorlink=Angiosperm Phylogeny Group|year=2016|title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV|journal=[[Botanical Journal of the Linnean Society]]|volume=181|issue=1|pages=1–20|issn=0024-4074|doi=10.1111/boj.12385}}</ref>
In the classification system of [[Rolf Dahlgren|Dahlgren]] the Cornales were in the [[superorder]] Corniflorae (also called Cornanae). Under the [[APG IV system]], the Cornales order includes these families:<ref name=APGIV>{{Cite journal|author=Angiosperm Phylogeny Group|year=2016|title=An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV|journal=[[Botanical Journal of the Linnean Society]]|volume=181|issue=1|pages=1–20|issn=0024-4074|doi=10.1111/boj.12385|doi-access=free}}</ref>


* [[Cornaceae]] (the [[dogwood]] family)
* [[Cornaceae]] (the [[dogwood]] family)
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* [[Hydrostachyaceae]]
* [[Hydrostachyaceae]]
* [[Loasaceae]] (the [[Mentzelia|stickleaf]] family)
* [[Loasaceae]] (the [[Mentzelia|stickleaf]] family)
* [[Nyssaceae]], (the [[tupelo]]s)
* [[Nyssaceae]], (the [[Tupelo (tree)|tupelo]]s)


The oldest fossils assigned with confidence to the order are ''[[Hironoia|Hironoia fusiformis]]'', described from [[Coniacian]] age Japanese coalified fruits, and ''[[Suciacarpa|Suciacarpa starrii]]'' described from American [[permineralized]] fruits of [[Campanian]] age.<ref name="Atkinson2016">{{Cite journal |last1=Atkinson |first1=B. |year=2016 |title=Early diverging asterids of the Late Cretaceous: ''Suciacarpa starrii'' gen. et sp. nov. and the initial radiation of Cornales |journal= Botany |volume=94 |issue=9 |pages=759–771 |doi=10.1139/cjb-2016-0035}}</ref>
The oldest fossils assigned with confidence to the order are ''[[Hironoia|Hironoia fusiformis]]'', described from [[Coniacian]] age Japanese coalified fruits, and ''[[Suciacarpa|Suciacarpa starrii]]'' described from American [[permineralized]] fruits of [[Campanian]] age.<ref name="Atkinson2016">{{Cite journal |last1=Atkinson |first1=B. |year=2016 |title=Early diverging asterids of the Late Cretaceous: ''Suciacarpa starrii'' gen. et sp. nov. and the initial radiation of Cornales |journal= Botany |volume=94 |issue=9 |pages=759–771 |doi=10.1139/cjb-2016-0035|doi-access=free }}</ref>


===Phylogeny===
===Phylogeny===

The Cornales order is sister to the remainder of the large and diverse [[asterid]] [[clade]].
The Cornales order is sister to the remainder of the large and diverse [[asterid]] [[clade]].
The Cornales are highly geographically [[disjunct distribution|disjunct]] and [[morphology (biology)|morphologically]] diverse, which has led to considerable confusion regarding the proper circumscription of the groups within the order and the relationships between them.<ref name=Xiang1993>Xiang, Q. Y., [[Douglas E. Soltis|Soltis, D. E.]], Morgan, D. R., and [[Soltis, P. S.]] (1993). Phylogenetic relationships of ''Cornus'' L ''sensu lato'' and putative relatives inferred from rbcL sequence data. ''Annals of the Missouri Botanical Garden'' '''80''', 723-734.</ref> Under the [[Cronquist system]], the order comprised the families Cornaceae, Nyssaceae, [[Garryaceae]], and [[Alangiaceae]], and was placed among the [[Rosidae]], but this interpretation is no longer followed. Many families and genera previously associated with the Cornales have been removed, including Garryaceae, ''[[Griselinia]]'', ''[[Corokia]]'', and ''[[Kaliphora]]'', among others.<ref name="Xiang1993" />
The Cornales are highly geographically [[disjunct distribution|disjunct]] and [[morphology (biology)|morphologically]] diverse, which has led to considerable confusion regarding the proper circumscription of the groups within the order and the relationships between them.<ref name=Xiang1993>Xiang, Q. Y., [[Douglas E. Soltis|Soltis, D. E.]], Morgan, D. R., and [[Soltis, P. S.]] (1993). Phylogenetic relationships of ''Cornus'' L ''sensu lato'' and putative relatives inferred from rbcL sequence data. ''Annals of the Missouri Botanical Garden'' '''80''', 723-734.</ref> Under the [[Cronquist system]], the order comprised the families Cornaceae, Nyssaceae, [[Garryaceae]], and [[Alangiaceae]], and was placed among the [[Rosidae]], but this interpretation is no longer followed. Many families and genera previously associated with the Cornales have been removed, including Garryaceae, ''[[Griselinia]]'', ''[[Corokia]]'', and ''[[Kaliphora]]'', among others.<ref name="Xiang1993" />

Likely cladogram for Cornales:<ref>Based on Figure 11.10 in {{Cite book|last1=Soltis|first1=Douglas|title=Phylogeny and Evolution of the Angiosperms|last2=Soltis|first2=Pamela|last3=Endress|first3=Peter|last4=Chase|first4=Mark W.|last5=Manchester|first5=Steven|last6=Judd|first6=Walter|last7=Majure|first7=Lucas|last8=Mavrodiev|first8=Evgeny|date=2018|publisher=University of Chicago Press|doi=10.7208/chicago/9780226441757.001.0001|isbn=978-0-226-38361-3}}</ref>
{{clade
|label1=Cornales
|1={{clade
|1={{clade
|1={{clade
|1={{clade
|1=[[Hydrangeaceae]]
|2=[[Loasaceae]]
}}
|2=[[Hydrostachyaceae]]
}}
|2=[[Nyssaceae]]
}}
|2={{clade
|1={{clade
|1=[[Grubbiaceae]]
|2=[[Curtisiaceae]]
}}
|2=[[Cornaceae]]
}}
}}
}}


Molecular data suggest four clades are within the Cornales: ''[[Cornus (genus)|Cornus]]-[[Alangium]]'', [[Nyssaceae|nyssoids-mastixioids]], Hydrangeaceae-Loasaceae, and ''[[Grubbiaceae|Grubbia]]-[[Curtisia]]'', with the Hydrostachyaceae in an uncertain position, possibly basal.<ref name=Fan2003>Fan, C. Z., and Xiang, Q. Y. (2003). Phylogenetic analyses of Cornales based on 26S rRNA and combined 26S rDNA-matK-rbcL sequence data. ''American Journal of Botany'' '''90''', 1357-1372.</ref> However, the relationship between these clades is unclear, and as a result of many historical taxonomic interpretations and differing opinions regarding the significance of morphological variations, rankings of taxa within the order are inconsistent.<ref name=Xiang1993 /><ref name=Fan2003 /><ref name=Eyde1988>Eyde, R. H. (1988). Comprehending ''Cornus'' - puzzles and progress in the systematics of the dogwoods. ''Botanical Review'' '''54''', 233-351.</ref> These difficulties in interpreting the systematics of Cornales may represent an early and rapid diversification of the groups within the order.<ref name=Fan2003 />
Molecular data suggest four clades are within the Cornales: ''[[Cornus (genus)|Cornus]]-[[Alangium]]'', [[Nyssaceae|nyssoids-mastixioids]], Hydrangeaceae-Loasaceae, and ''[[Grubbiaceae|Grubbia]]-[[Curtisia]]'', with the Hydrostachyaceae in an uncertain position, possibly basal.<ref name=Fan2003>Fan, C. Z., and Xiang, Q. Y. (2003). Phylogenetic analyses of Cornales based on 26S rRNA and combined 26S rDNA-matK-rbcL sequence data. ''American Journal of Botany'' '''90''', 1357-1372.</ref> However, the relationship between these clades is unclear, and as a result of many historical taxonomic interpretations and differing opinions regarding the significance of morphological variations, rankings of taxa within the order are inconsistent.<ref name=Xiang1993 /><ref name=Fan2003 /><ref name=Eyde1988>Eyde, R. H. (1988). Comprehending ''Cornus'' - puzzles and progress in the systematics of the dogwoods. ''Botanical Review'' '''54''', 233-351.</ref> These difficulties in interpreting the systematics of Cornales may represent an early and rapid diversification of the groups within the order.<ref name=Fan2003 />
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* http://www.britannica.com/EBchecked/topic/137865/Cornales
* http://www.britannica.com/EBchecked/topic/137865/Cornales


{{Angiosperm orders}}
{{Taxonbar|from=Q21769}}
{{Taxonbar|from=Q21769}}
{{Authority control}}


[[Category:Cornales|Cornales]]
[[Category:Cornales| ]]
[[Category:Angiosperm orders]]
[[Category:Angiosperm orders]]

Latest revision as of 12:26, 23 April 2024

Cornales
Temporal range: Coniacian–Recent
Dove tree in flower, a species in Nyssaceae
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Cornales
Link[1]
Families

The Cornales are an order of flowering plants, early diverging among the asterids, containing about 600 species. Plants within the Cornales usually have four-parted flowers, drupaceous fruits, and inferior to half-inferior gynoecia topped with disc-shaped nectaries.

Taxonomy[edit]

In the classification system of Dahlgren the Cornales were in the superorder Corniflorae (also called Cornanae). Under the APG IV system, the Cornales order includes these families:[2]

The oldest fossils assigned with confidence to the order are Hironoia fusiformis, described from Coniacian age Japanese coalified fruits, and Suciacarpa starrii described from American permineralized fruits of Campanian age.[3]

Phylogeny[edit]

The Cornales order is sister to the remainder of the large and diverse asterid clade. The Cornales are highly geographically disjunct and morphologically diverse, which has led to considerable confusion regarding the proper circumscription of the groups within the order and the relationships between them.[4] Under the Cronquist system, the order comprised the families Cornaceae, Nyssaceae, Garryaceae, and Alangiaceae, and was placed among the Rosidae, but this interpretation is no longer followed. Many families and genera previously associated with the Cornales have been removed, including Garryaceae, Griselinia, Corokia, and Kaliphora, among others.[4]

Likely cladogram for Cornales:[5]

Cornales

Molecular data suggest four clades are within the Cornales: Cornus-Alangium, nyssoids-mastixioids, Hydrangeaceae-Loasaceae, and Grubbia-Curtisia, with the Hydrostachyaceae in an uncertain position, possibly basal.[6] However, the relationship between these clades is unclear, and as a result of many historical taxonomic interpretations and differing opinions regarding the significance of morphological variations, rankings of taxa within the order are inconsistent.[4][6][7] These difficulties in interpreting the systematics of Cornales may represent an early and rapid diversification of the groups within the order.[6]

References[edit]

  1. ^ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. hdl:10654/18083.
  2. ^ Angiosperm Phylogeny Group (2016). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV". Botanical Journal of the Linnean Society. 181 (1): 1–20. doi:10.1111/boj.12385. ISSN 0024-4074.
  3. ^ Atkinson, B. (2016). "Early diverging asterids of the Late Cretaceous: Suciacarpa starrii gen. et sp. nov. and the initial radiation of Cornales". Botany. 94 (9): 759–771. doi:10.1139/cjb-2016-0035.
  4. ^ a b c Xiang, Q. Y., Soltis, D. E., Morgan, D. R., and Soltis, P. S. (1993). Phylogenetic relationships of Cornus L sensu lato and putative relatives inferred from rbcL sequence data. Annals of the Missouri Botanical Garden 80, 723-734.
  5. ^ Based on Figure 11.10 in Soltis, Douglas; Soltis, Pamela; Endress, Peter; Chase, Mark W.; Manchester, Steven; Judd, Walter; Majure, Lucas; Mavrodiev, Evgeny (2018). Phylogeny and Evolution of the Angiosperms. University of Chicago Press. doi:10.7208/chicago/9780226441757.001.0001. ISBN 978-0-226-38361-3.
  6. ^ a b c Fan, C. Z., and Xiang, Q. Y. (2003). Phylogenetic analyses of Cornales based on 26S rRNA and combined 26S rDNA-matK-rbcL sequence data. American Journal of Botany 90, 1357-1372.
  7. ^ Eyde, R. H. (1988). Comprehending Cornus - puzzles and progress in the systematics of the dogwoods. Botanical Review 54, 233-351.

External links[edit]

Retrieved from "https://en.wikipedia.org/w/index.php?title=Cornales&oldid=1220377619"